this is "world news." tonight, two breaking stories here. a deadly plane crash right into a packed parking lot in florida. investigators rushing to the scene. cars charred. what about the pilot? any passengers? our correspondent in florida tonight. also breaking, the alarming new moves by north korea tonight. the u.s. on heightened alert. the new defenses being moved into place on the west coast. martha raddatz is standing by. abc news investigates. an alert tonight for anyone buying a car. we are on the car lot, asking about that popular tool they use to seal the deal. hey, rico. i'm david muir with abc news. we have a few questions about how you use the carfax in selling your used cars. the "20/20" investigation breaks right here. and, our "person of the week." the little girl pushed to incredible heights by her father. tonight, the obituary she just wrote, already being read by thousands all over america, called the best obit ever.